Combined milling and boring machine



w. D. ARCHEA COMBINED MILLING AND BORING MACHINE 1935 4 Sheets-Sheet 1Filed March 8 INVENTOR. WALTER DAEcHEA ATTORNEY.

Aug. 25, 1936. w. D. ARCHEA 2,052,271

COMBINED MILLING AND BORING MACHINE Filed March 8, 1935 4 Sheets-Sheet 2IN VEN TOR. WALTER 1]. AECHEA Aug. 25, 1936. w. D. ARCHEA I 2,052,271

COMBINED MILLING AND BORING MACHINE Filed March 8, 1935 4 Sheets-Sheet 3INVENTOR. WALTERD.ARCHEA ATTORNEY Aug. 25,1936.

w. D. ARCH EA 2,052,2 71

COMBINED MILLING AND BORING MACHINE Filed March 8, 1955 4 Sheets-Sheet 4as a9 '4 INVENTOR. WALTERDARCHEA ATTORNEY.

Patented Aug. 25, 1936 convnni mnirna Ann Bonnie 1 MAClillNlE Walter n.Al'clhea, Cincinnati, c ne, assignor to The Cincinnati Milling MachineCo Cincinnati, Ohio, a corporation of Uhio Application March 8,

9 Claims.

This invention relates to machine tools and more particularly to acombined milling-and boring machine.

One of the objects of this invention is to provide 5 a machine of thecharacter described which is immediately utilizable for either purposewithout the necessity of making changes or alterations in the machineproper.

Another object of this invention is to provide in connection with amachine of the character described an improved transmission mechanismwhereby the rate and direction of either the millingspindle or theboring spindle may be controlled by the same means.

'Another object of this invention is to provide a machine of the.character set forth in which the tool spindles may be convenientlyadjusted, either angularly 'or laterally of their axes without involvingcomplications in their actuating mechamsm.

Another object of this invention is to provide a machine of thecharacter set forth having a carrier with a slidable member which servesthe dual function of providing an arbor support for a milling tool andserves as means for supporting and feeding a boring tool spindle.

Other objects and advantages of the present invention should be readilyapparent by reference 4 to the following specification, considered incon- 30 junction with the accompanying drawings forming a part thereofand it is to be understood that any modifications may be made in theexact structural details there shown and described, within the scope ofthe appended claims, without departing from 'or exceeding the spirit ofthe invention.

Referring to the drawings in which like reference numerals indicate likeor similar parts:

- Figure 1 is an elevation of a machine tool em- 40 bodying theprinciples of this invention.

Figure 2 is a vertical section through the carrier of the machine as ofFigure 1.

Figure 3 is a horizontal section through the carrier as viewed on line3-3 of Figure 1.

Figure 4 is a detailed section on the line Figure 1 showing the branchtransmission train for feeding the boring tool.

Figure 5 is a detail section on the line 5-5 of Figure 1 showing themeans for changing the rate and direction of rotation of either themilling spindle or the boring spindle.

Figure 6 is a detail view showing the selector clutch control for -theboring spindle. 55' In the preferred exemplification of the inviewed onthe line 2-2 I 1935, Serial No. 10,125

vention shown in Figure 1, the reference numeral l indicates the bed ofthe machine having guide ways ii for receiving and guiding a worksupport ii. The work support or work table may be reciprocated by anysuitable form of mechanical or hydraulic transmission, preferably suchas that used for milling machine tables, and, since such transmissionsare well known in the machine tool art and since the particular form oftransmission does not constitute any part of the 10 present invention,the same has not been illustrated herein. v i

Uprising from one side of the bed is a column l3 having verticalguideways l4 formed upon one side thereof for receiving and guiding atool supporting means comprising a sub-base member 15 in which is formedsurfaces which are complementary in shape to the guiding surfaces H, asmore particularlyshown in Figure 3 of the drawings; anda carrier member16 which is pivotally 20 mounted on the pin I! for angular adjustment,

the pin l1 being secured in thesub-base l5.

As shown in Figure 3, the carrier has a milling tool spindle l8iournaled in a quill l9,-the. latter being axially movable in thecarrier by means of conventional mechanism comprising a spiral worm 20which meshes with complementary teeth 2| formed in the side of thequill. The'worm 20 may be rotated by means of a beveled gear 22 meshingwith a similar bevel gear secured to the end of shaft 23. This shaft mayhave a suitable indicating dial 24 secured thereto for indicating theamount-of movement, and the end of the shaft maybe provided with ahexagon head 25 for receiving a suitable wrench for rotation thereof.

The spindle has a spline shank 26 which extends through a spline bore 21formed in the hub of the bull gear 28, which serves as a driving meansfor the spindle in all axial positions thereof. The end 29 of thespindle is reduced and is passed through antifriction bearings 30 in.the rear of the carrier for supporting the rear end of the spindle. Thereduced end 29 of the cutter spindle is elongated to provide support forthe rear end of the spindle when the same is adjusted toward the tableby the quill mechanism. The usual drawbar 3| extends axially through thecenter of the spindle for securing the shank of a milling cutter orarbor in the nose of the spindle.

When a. cutter arbor, such as 32, Figure 1, is utilized for supporting amilling cutter, such as 33, the outboard end of the arbor is supportedby a pendent, 34 which has a suitably formed guideway for attachment'tothe underside of a 55 and supporting the pendant 34 in desired relationto the arbor in the one case and is utilized for feeding the boringspindle in the other case. The boring spindle 88 is journaled inantifriction bearings 81 mounted in the forward end of the member 88 andin a plain bearing 88 mounted in the rear end of the member. The member88 has dovetailed guideways 88 formed on the bottom thereof forinterengagement with complementary formed guide surfaces formed in thetop of the carrier and a rack 4i is secured to the underside of themember for interengagement with a pinion 42, rotation of which serves toeffect-adjustment of the member 88.

A power transmission has been provided for imparting movement to themilling spindle, the boring spindle and the overarm member 85 and thistransmission includes in general a common rate determining and directiondetermining means for the three movable elements and selector meanswhereby any one of the elements may be connected for power movement.

This transmission includes a prime mover 43, which, as shown in Figure1, is mounted on the carrier and is connected as through an Oldhamcoupling 44 to the worm 45 whichmeshes with a worm gear 48 as shown inFigure 2. The

worm gear is keyed to the lower end of a vertical shaft 41 which isjournaled in the carrier and provided on the upper end with a changegear 48. This change gear intermeshes with a second change gear 48secured to the upper end of a second vertical shaft 88. A cover plate 8|is removable to provide access to these change gears to permitinterchanging thereof or substitution of other pairs of different ratiofor determining the rate of movement of the final driven part.

The lower end of shaft 88 has a bevel gear 6| which continuously rotatesa pair of bevel gears 52 and 88 in opposed directions, these last-namedbevel gears being supported for free rotation on a sleeve 84 as moreparticularly shown in Figure 3. Splined on; this sleeve is a slidableclutch member 88 having clutch teeth 88 formed on opposite ends thereoffor interengagement with similarly formed clutch teeth 5'! formed onopposing faces of the bevel gears. The shifter for this clutch is shownin Figure 5 and comprises a shifter member 88 integrally secured to ashaft 88 which projects through the wall of the carrier and is providedwith a manually operable handle 88. In the end of this handle is aspring pressed plunger 8|, which, as shown in Figure 1, is adapted toselectively engage notches 82 and 88 for holding the clutch in eitherone of its driving positions. The sleeve 54 constitutes a common driverfor three branch transmissions which extend to the various movableelements and means are provided for selectively connecting any one ofthese three branch transmissions to the sleeve. As shown in Figure 3, afirst slideable clutch member 62 is provided having clutch teeth onopposite faces for selective engagement with clutch teeth 68 of bevelgear 84 for actuating the power the overarm 85; or with clutch teeth 88formed-[onthe end of gear 88, which gear intermeshes with the bull gear28 for rotating the milling spindle I8. This clutch is operated by theshifter member 81, Figure 4, wh ch is secured to the end of shaft 88which has the manually operable handle. on the end of which is a springpressed plunger 18 similar to'that shown in'Figure 5.

Another selector clutch H is splined orishaft l2 and has'clutch teeth 18for interengagement with clutch teeth 14 formed in the end of sleeve 51.This clutch is operated by the shifter member 18 shown in Figure 6;having an operating handle 18 similar in construction to the previouslydescribed clutch shifting levers.

The shaft 12 is mounted for rotation within the sleeve 54 and extendsbeyond the end of the carrier, as shown in Figure l, and into thehousing 18 which depends from the rear of member 85. In this housing isjournaled a rotatable member 78 having a splined connection with theshaft I2 and interconnected through 'motion transmitting means 11 to arotatable member 18 keyed to the end of the boring spindle 88.

From this it will be seen that the boring spindle may be selectivelyrotated at any time by simply engaging the clutch member II.

The branch transmission for reciprocating the overarm 38 is moreparticularly shown in Figure 4 and comprises a bevel gear 18 supportedon the lower end of shaft 88 and intermeshing with the bevel gear 84shown in Figure 3. The upper end of shaft 88 has a bevel gear 8| whichinterengages with a bevel gear 82 supported for free rotation in thecasting. The gear 82 has clutch teeth 83 which may be selectivelyengaged by similar clutch teeth on the end of clutch member 84 which isfixed for rotation with shaft 88, which shaft has the spur gear 42 fixedto the end thereof. 'I'he'clutch member 84 is shifted by a central rod88 which projects beyond the end of shaft 88 and has a hand wheel 81secured thereto for shifting the rod. A spring 88 is interposed betweenthe handle 81 and the end of shaft 88 for normally maintaining theclutch in an engaged position. The end of the shaft also has a clutchmember 88 fixed therewith and has suitable clutch teeth 88 forengagement with clutch teeth 8| formed with the handle 81 whereby uponmovement of the shifter rod 88 to the left to disengage clutch 84 andthereby disconnect the power, the clutch teeth 88 and 8i will beinterengaged for manual rotation of shaft".

A graduated dial 82 may also be. secured to they end of shaft 85 forindicating the length of movement imparted to the boring spindle. Fromthis it will be seen that the clutch 32 is a selector clutch fordetermining either rotation of the milling spindle or power feed of theboring spindle.

The carrier may be vertically adjusted by an elevating screw 88, Figure2, which is journaled at opposite ends in the column l8 and is inthreaded engagement with a nut 84 fixed to the rear end of the carrierplate It. The upper end 88 of the screw is squared or provided withother suitable shape for receiving and operating a removable operatinghandle. The screw may also be provided with a micrometer dial 88 forindicating small amounts of vertical adjustment.

As previously stated, the carrier is supported on the pin I l forangular adJustment and its adjustment is effected by a worm 81 whichmeshes with suitably formed teeth 88 cut in an integral part of thelower end of the carrier as more particularly shown in Figures 1 and 2.The worm 81 is supported on a shaft 88 which extends to the'rear of themachine and is provided with an operating handle I00. The carrier alsohas a plate l0l which is graduated in degrees and c0- operates with afixed pointer l02 whereby the angular adjustment of the milling spindleor the boring spindle may be determined. A plurality A simplifiedcombined boring and milling machine has thus been provided which issimple in construction and inexpensive to build, and which may bereadily operated as either type of machine by simply operating theproperly selected clutches and without the necessity of making any majorchanges in the machine structure itself.

I claim:

1. In a combined machine tool, the combination with a support having awork table movable thereon, of a tool carrier, guide ways on the supportfor receiving said carrier, means for adjusting said carrier relativeto'the work table, a milling cutter spindle journalecl in said carrier,a longitudinally movable member supported on the car-- rier for movementparallel to the axis of said spindle, said member having guide waysthereon for receiving an arbor support, a boring tool spindle supportedin said member, a common prime mover for actuating all of said partsincluding a main transmission connected to the prime mover and havingrate change and reversing means serially arranged therein, and aplurality of selector clutches for coupling the respective movable partsseverally to .the main transmission.

2. In a machine tool having a work support, the combination of a carrieradjustably mounted with respect to said support, a tool spindlejournaled in said carrier for receiving a tool supporting arbor, anoverarm member reciprocably mounted in guide ways formed in the carrier,a support on said overarm for the arbor, power operable meansself-contained in the carrier for rotating said spindle and moving saidoverarm including a prime mover, a selector clutch actuable thereby andshlftable to a first position for actuation of the cutter spindle; to asecond position for power actuation of said overarm; and to a thirdposition for disconnecting the prime mover from both of said parts;

3. A machine tool having a work support, a column uprising at one sideof said work support, a tool carrier mounted on said column, a boringtool spindle, a longitudinally reciprocable member for supporting saidspindle on the carrier and for feeding the spindle relative tosaidworksupport, transmission means self-contained in the carrier forrotating said spindle and feedingsaid member including a prime mover, anactuator powe'r driven thereby, co-axial clutches for, selectivelyconnecting said actuator for rotation of the spindle, and for powerfeeding movement thereof, and an additional clutch in serialrelationship with one of said clutches for disconnecting the powerfeeding means, manually operable means for feeding the spindle; andmeans to simultaneously connect said manually operable means upondisconnection of said power feeding means.

4. A combined machine tool having a bed, a worksupport reciprocablymounted on said bed, a column uprising from the bed, a carrieradjustably mounted on said column, a spindle journaled in the carrierfor rotating a milling cutter, a boring bar'reciprocably supported bythe cartate a. milling cutter rier having a boring tool spindlejournaled therein, guide surfaces formed on theboring bar,cornplementary guide surfaces formed in the carrier;

and an arbor support for milling cutter arbors having guide surfacescomplementary to the surfaces of said boring bar, whereby the guidesurfaces on the boring bar serve to guide its movement in the carrierwhen the machine isutilized as a boring machine, and to receive thearbor support when the machine is utilized as a milling machine.

5. A combined milling and boring machine comprising a work table, acarrier, a milling outter spindle journaled in the carrier, a boringtool spindle, a longitudinally movable member supported by thecarrier'for journaling and feeding the boring tool spindle, poweroperable means self-contained in the carrier for actuation of theseveral parts including a rotatable sleeve, power operable means forreversely rotating said sleeve, a member journaled externally of saidsleeve and connectible therewith for rotation of the milling toolspindle. a second rotatable member journaled externally of said sleeveand connectible therewith for reciprocating said longitudinally movablemember, and a third member journaled internally of said sleeve andconnectible therewith for rotating said boring tool spindle.

6. A combined machine tool having a coring tool spindle; means forsupporting and feeding said spindle; a milling tool spindle; poweroperable transmission means for actuation of the several parts includinga rotatable sleeve member, a pair of oppositely rotatable gearssurrounding said sleeve, a reciprocable clutch member for selectivelyconnecting said gears for opposite rotation of the sleeve, 2. secondpair of members surrounding said sleeve, one of which is connected forrotation of the milling tool spindle, and the other connected forreciprocating said longitudinal member, a selector clutch for connectingsaid members for feeding movement of the boring tool; an additionalmember rotatable within said sleeve, and an additional clutch member forconnecting said sleeve to the last member for rotation of the boringtool spindle.

7. A combined machine tool having a work support, a column, a firstcarrier mounted on said column for relative movement with reon the firstcarrier for movement relative thereto, cutter spindles journaled inrespective car riers, 'one of which is adapted to receive and roand theother adapted to receive and rotate a boring tool, a prime mover mountedon one of said carriers, means power operable by the prime mover foractuating either spindle, and additional means selectively operable bythe prime mover i'or effecting relative movement between the carriers.

8. A machine tool having a bed. a work table reciprocably mounted uponthe bed, a column uprising from the bed, a carrier mounted on the columnfor vertical movement relative to the table, a longitudinally adjustablesupport mounted on the carrier for movement in an angular direction withrespect to said vertical movement, tool spindles journaled in thecarrier and the support respectively, one of said movable members, arotor selectively connectible for opposite rotation by the prime moverand selector clutches for connecting said rotor with either of saidspindles for power rotation thereof.

a prime mover mounted on 9. A machine tool having a work support, acolumn uprising in one side of said work support. a tool carrier mountedon said column for relative adjustment, a boring tool spindle.longitudinally reciprocable member for supporting said spindle on thecarrier and for feeding the spindle relative to said work support.transmission means self-contained in the carrier for rotating saidspindle and for feeding said member including a prime mover. an actuatoroppositely driven thereby, co-axial clutches for selectively connectingsaid actuator to rotate the spindle or feed said member, and anadditional clutch in serial relationship with one of said clutches tordisconnecting the power feeding means from the prime mover.

waurm n.

